糞便是一種重要的農家肥料,含氮素較多,肥效快,又稱為速效性氮肥,施到土壤中很快就被植物吸收利用,很多菜農、果農朋友喜歡施用人糞尿、畜禽糞等糞肥。作為底肥,糞肥是一種有機肥料,養分全,能改良土壤;作(zuo)為(wei)衝(chong)施(shi)肥(fei),則(ze)由(you)於(yu)冬(dong)春(chun)季(ji)節(jie)大(da)棚(peng)地(di)溫(wen)偏(pian)低(di)或(huo)地(di)溫(wen)未(wei)能(neng)回(hui)升(sheng)到(dao)蔬(shu)菜(cai)生(sheng)長(chang)適(shi)宜(yi)的(de)溫(wen)度(du)範(fan)圍(wei),菜(cai)農(nong)朋(peng)友(you)不(bu)敢(gan)施(shi)用(yong)化(hua)學(xue)肥(fei)料(liao),而(er)習(xi)慣(guan)於(yu)衝(chong)施(shi)糞(fen)肥(fei),甚(shen)至(zhi)直(zhi)接(jie)往(wang)土(tu)壤(rang)中(zhong)衝(chong)施(shi)鮮(xian)糞(fen)。這(zhe)種(zhong)做(zuo)法(fa)值(zhi)得(de)改(gai)進(jin),在(zai)蔬(shu)菜(cai)實(shi)際(ji)栽(zai)培(pei)中(zhong),糞(fen)肥(fei)的(de)施(shi)用(yong)必(bi)須(xu)注(zhu)意(yi)以(yi)下(xia)幾(ji)點(dian);
一、 糞肥要腐熟
即使有的糞肥經過幾個月的堆放,或已經幹燥,也不一定意味著完全腐熟,隻是裏麵水分含量減少了,糞肥不完全腐熟會引起以下問題:
1、燒根:糞肥施用到土壤中,定植上蔬菜後,隨著澆水,會使未完全腐熟的糞肥逐漸腐熟並放出一定的熱量,從而導致燒根或燒苗。
2、蟲害:糞fen便bian往wang往wang含han有you多duo種zhong腸chang道dao致zhi病bing菌jun和he寄ji生sheng蟲chong卵luan,是shi傳chuan播bo疾ji病bing的de重zhong要yao途tu徑jing。糞fen肥fei施shi用yong後hou,由you於yu未wei完wan全quan腐fu熟shu,可ke能neng會hui造zao成cheng蟲chong害hai增zeng加jia,如ru雞ji糞fen中zhong的de雞ji虱shi子zi較jiao多duo。
3、氣害:未(wei)完(wan)全(quan)腐(fu)熟(shu)的(de)糞(fen)肥(fei)在(zai)土(tu)壤(rang)中(zhong)慢(man)慢(man)發(fa)酵(jiao)腐(fu)熟(shu),會(hui)逐(zhu)漸(jian)放(fang)出(chu)部(bu)分(fen)有(you)害(hai)氣(qi)體(ti)如(ru)氨(an)氣(qi)或(huo)二(er)氧(yang)化(hua)硫(liu)或(huo)氫(qing)二(er)硫(liu)等(deng),這(zhe)類(lei)有(you)害(hai)氣(qi)體(ti)如(ru)果(guo)含(han)量(liang)過(guo)高(gao),或(huo)由(you)於(yu)天(tian)氣(qi)冷(leng),放(fang)風(feng)不(bu)及(ji)時(shi),有(you)害(hai)氣(qi)體(ti)會(hui)在(zai)棚(peng)中(zhong)積(ji)累(lei),影(ying)響(xiang)蔬(shu)菜(cai)的(de)正(zheng)常(chang)生(sheng)長(chang),容(rong)易(yi)出(chu)現(xian)氣(qi)害(hai)。
二、 部分糞肥的質量較差
有的糞肥中被加入一定量的火堿,可使一方雞糞膨大為一方半, “發”qilaidefenfeikanshangqutijizengda,danzhezhongfenfeishiyongdaoturangzhonghou,bujinhuizaochengshaogen,haihuipohuaiturang,geishucaishengchanzaochengbulianghouguo。yougebiejingxiaoshangdejifenshizaokangjiajimaodejiahuohuoshichanjiadeliezhifei。
三、 建議菜農朋友在使用糞肥前,確保糞肥充分發酵
在糞肥中加入發酵菌劑可使畜禽糞便快速發酵、chedifushu。fajiaohoudefenfeiwuchouwei,youjizhihanlianggao,yingyangquanmian,shidaodilibushaogenmiao。shiyongshengwujunjifajiaohoudefeiliaozhongdeyouyiweishengwuzaizuowugenjiturangzhongnengxingchengyoushijunqun,yizhiqitayouhaibingyuanweishengwudeshengchangfanzhi,jianshaoleyouhaiweishengwudedeweihaijihui。qici,weishengwuzaishengchangfanzhiguochengzhongnengfenmidaixiewuzhi,tigaolezuowudikangbulianghuanjingdenengli,zengqiangzuowudekangbingxing。yongshengwujunjifajiaoyoujifeicaozuojiandan,budanjieyuechengben,erqiefajiaohoudeyoujifeizhiliangbideshangshichangshangxiaoshoudeyoujifei,shidaotianlinengdadaohenhaodexiaoguo。
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